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Overcurrent exists when current exceeds the rating of equipment or the ampacity of a conductor. This can be due to an overload, short circuit, or ground fault [Art. 100]. Overcurrent devices protect conductors and equipment from overcurrent....More

Fill in the blank with the appropriate answer.
When installing metal-clad power switchgear (greater than 600V), the external hinged doors or covers must be ___________ .
A. provided with stops to hold them in the open position
B. provided with a full-length hinge
C. lockable.
D. Provided with a viewing window
Answer: A...More

When installing polyvinyl chloride conduit (PVC) or reinforced thermosetting resin conduit (RTRC) as a Class I, Division 1 wiring method for an underground installation in a tank farm area, which statement is not true?
A. The conduit(s) must be installed with 24 in. of cover over the top of the concrete, which encases the conduit.
B. The conduit(s) must be covered by at least 2 in. of concrete.
C. The conduit(s) must be encased in a concrete envelope by at least 2 in. of concrete....More

Outdoor conductors running to buildings aren't necessarily service conductors. They may be feeders or branch circuit conductors originating in another building. They may provide power for area lighting, outdoor equipment, or a separate structure....More

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Labor costs often represent one of the biggest expenses in an companies budget. You can reduce those costs and get more work done by using the techniques outlined in this eBook to improve driver efficiency and productivity....More

Designing a grounding system for industrial facilities can raise many questions along the way. The two main questions determining the final decision have generally always pertained to service continuity and single phase loads....More

Download these Frequently Asked Questions, sponsored by Westex to learn more about FR Clothing. These FAQs discuss the benefits of arc rated clothing and how NFPA 70E applies.
Download now to learn more....More

The electrical industry spends hours participating in training in order to understand the revisions found in the 2014 NEC that will enhance electrical safety for our community. Electrical code revisions also serve as a significant catalyst that enables investment,...More

Are you protected in the event of short circuit fault? Stainless steel cable ties provide a durable method of bundling, identifying and fastening cable in severe and harsh conditions.
Productivity. Reliability. Safety. We’ve Got You Covered....More

Productivity. Reliability. Safety. We’ve Got You Covered.
The connectors and crimping process make the Panduit solution unique. Offering the speed and safety of a compression connection, while exceeding the stringent requirements of IEEE Std 837-2002. Install in ANY weather. No burn permits needed....More

Arlington's TVBU810 delivers the ultimate in versatility for installing wall-mounted TVs in new or retrofit projects. You can install it horizontally or vertically to ensure proper positioning of low voltage connections behind the TV....More